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Hi, guys, now you can download the official stock LG G4 firmware here. They are flashable KDZ files. If you have not tried to flash your LG phone before, then the flashing tutorial quite necessary. I will write the tutorial some time, just keeping an eye on my site.

Good luck, feel free to let me know if you have any trouble in flashing your phone.

Caution: Installing the firmware will cause your phone to lose operator specific customizations and your data. Please do not forget to backup and restore all of your data before flashing your phone, so that if the firmware flash fails they can easily restore all of your information. Enjoy!

CAREFUL. Read the XDA developer forum post instead! If you use the KDZ’s that are HOTLINKED here instead of going through the proper site and downloading the updated ones and have an updated phone you’ll brick your phone. Seriously.